body {
  margin: 0;
  font-family: 'Helvetica Neue', sans-serif;
  background: #f9f9f9;
  color: #333;
}

header {
  background: #000;
  text-align: center;
  padding: 1rem;
}

.logo {
  max-width: 150px;
}

.tagline {
  color: #fff;
  font-size: 1.2rem;
  margin-top: 0.5rem;
}

.intro, .contact-form {
  padding: 2rem;
  text-align: center;
}

.button {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background-color: #e63946;
  color: #fff;
  border: none;
  text-decoration: none;
  font-weight: bold;
  border-radius: 5px;
  margin-top: 1rem;
}

footer {
  background: #000;
  color: #fff;
  text-align: center;
  padding: 1rem;
}

@media (min-width: 600px) {
  .intro, .contact-form {
    max-width: 600px;
    margin: auto;
  }
}